Urban planning has become the latest target of conspiracy theorists. In recent weeks, the 15-minute city concept — where neighbourhoods provide life's essentials in 15 minutes by foot or bike — has become a harbinger of big brother in conspiracy-land.

Misinformation has triggered fierce protests against 15-minute city plans in the UK and Canada, with the City of Oxford even having to clarify they wouldn't be erecting physical barriers to separate citizens.

Brent Toderian, a keen urbanist and Vancouver's former chief planner, is here to help us understand how the polite world of urban planning crashed into conspiracies.